Quantitative analysis of structural, relaxational and electrostrictive properties of PVDF-TRFE/PMMA films irradiated with high-energy electrons

Vivek Bharti, H. Xu, Z. Y. Cheng, T. Mai, Q. M. Zhang

    Research output: Contribution to journalArticlepeer-review

    17 Scopus citations

    Abstract

    In this paper, the effect of high-energy electron irradiation on the transitional and electromechanical responses of PVDF-TRFE/PMMA (poly (vinylidene fluoride-trifluoroethylene)/ polymethylmethacrylate) blend films is investigated in the light of a recent finding of large electrostrictive strain and high electromechanical response of PVDF-TRFE copolymer films after high-energy electron irradiation. Due to the decrease in crystallinity, both the dielectric and polarization responses were found to decrease with PMMA content. Interestingly, the presence of PMMA is found to affect the crystal-amorphous interface properties strongly in irradiated polyblend films. The field-induced strain which could be due to electrostriction and Maxwell stress for a blend system is found to come mainly from electrostriction. At room temperature, the contribution to the total strain from the Maxwell stress is found to be <20% while this contribution increases markedly with increasing temperature, especially for 7%wt PMMA polyblend films.

    Original languageEnglish (US)
    Pages (from-to)718-724
    Number of pages7
    JournalIEEE Transactions on Dielectrics and Electrical Insulation
    Volume8
    Issue number4
    DOIs
    StatePublished - Aug 2001

    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering

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